A Simple Random Sample of Size 51 Has Mean $\bar { x } = 70.72$

question 13

Multiple Choice

A simple random sample of size 51 has mean $\bar { x } = 70.72$ . The population distribution is approximately normal, with standard deviation $\sigma = 16.25$ . Determine the correct method of finding A 95% confidence interval for the population mean and compute it.

• A) z-method: (66.15, 75.29)
• B) Cannot compute: the population size is too small.
• C) t-method: (66.15, 75.29)
• D) z-method: (66.26, 75.18)

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Definitions:

Unconscious Desires

Wishes or wants that reside within the unconscious mind, often influencing behavior without the individual's aware recognition.

Behavioral Contracting

A therapy technique involving a written agreement between a therapist and client to modify the client's behavior.

Classical Conditioning

A learning process in which a natural response to a certain stimulus becomes triggered by a previously neutral stimulus after repeated pairings.

Token Economy

A behavior modification system that uses tokens as a form of reinforcement for desirable behaviors, which can later be exchanged for rewards.